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<title>Untitled Document</title>
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<?php 
//logout first
session_start(); 
//  这种方法是将原来注册的某个变量销毁
unset($_SESSION['saler']); 
unset($_SESSION['admin']);
//  这种方法是销毁整个 Session 文件
session_destroy(); 

header("Location:../index.html");
?>

</body>
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